Roller book-shelf



IIIIIIIIIII (No Model.)

. 2 Sheets-Sheet 2. E. H. BABBITT.

ROLLER BOOK SHELF.

Patented Feb. 4, 1890.

. III" IIHU] N PETERS. Plmto-Lvllwglaphor. Washin mn. ac

- out the improvement.

UNITED STATES PATENT OFFICE.

EDMOND H. BABBITT, OF ST. LOUIS, MISSOURI, ASSIGNOR TO THE GEO. D.BARNARD 85 COMPANY, OF EAST ST. LOUIS, ILLINOIS.

ROLLER BOOK-SH ELF.

SPECIFICATION forming part of Letters Patent No. 420,898, dated February4, 1890.

Application filed July 31,1889. Sen'al No. 319,328. (No model.)

after described and claimed, aided by the au- 1 nexed drawings, makingpart of this specification, in which- Figure 1 is a plan of a shelf towhich the improvement is adapted. Its supports are shown in horizontalsection; Fig. 2, a front elevation of the same; Fig. 3, a side elevationof the same; Figs. 4, 5, 6, and 7, views, upon an enlarged scale, ofthat part of the construction with which the improvement is immediatelyconnected, Fig. 4 being a plan, Fig. 5 a front elevation, Fig. 6 a frontelevation, but showing an additional shelf, and Fig.7 a section on theline 7 7 of Fig. 4.

The same letters of reference denote the same parts.

The shelf A, Figs. 1,2, 3,4, 5, and 6, saving as it maybe modified orsupplemented by the improved feature under consideration, is of any ofthe customary forms to which the improvement is adaptable; and I desirenot to be restricted to any one of such forms in carrying The particularform shown, however, is considered the most desirable. Its side bars areshown at a at, its cross-bars at a a to, its rollers at a a a a a andother roller-supporting bars at (t ta The uprights of the case or rackare shown at B B B B The shelf at its inner end is supported by notchingits side bars at a Fig. 3, and hanging the shelf upon pins 1) upon therear uprights B B as shown. The front uprights B B have perforations bto receive the bolts 0, which are the novel feature of the construction.hat characterizes the bolt 0 is its adjustability. It can be arranged inthree positions. (Shown, respectively, in Fig. 4, in the left-handportion of Fig. 6, and in the right-hand portion of Fig. 6.) The bolt isheld and adapted to be worked longitudinally in suitable supports, suchas the lugs or brackets D upon the cross-bar a When it is desired tofree the shelf from. the upright 13 the bolt is with drawn into theposition shown in the left-hand portion of Fig. 6. WVhen it is desiredto secure the shelf in the upright B the bolt is moved out to cause itsend to engage in the opposing perforation b in the upright, as shown inFigs. 4 and 5; and when it is desired to utilize the bolt for supportingnot only the shelf A, to which it is fastened, but also another shelf Aat the same level, but in an adjoining tier E of the case or rack, thebolt ismoved still farther outward, so that its end extends through theupright B and then through the side bar of that other shelf A, as shownin the right-hand portion of Fig. 6. It is important that the bolt ineach of its positions be secured so that it cannot be jarred out ofplace. To this end, as the most desirable means therefor, the bolt isgrooved at three points 0 c 0 in connection with which a spring-latch Fis adapted to act. The positions of the grooves c c 0 respectively,conform to the described positions in which the bolt may be adjusted.When the bolt is withdrawn into its innermost position, the latchengages in the outermost groove. When the bolt is in engagement with theupright B only the latch engages in the middle groove, and when the boltis engaging in both the upright and the shelf A the latch engages in theinnermost grooves, substantially as shown in the various figures. Theuse of these bolts is not restricted to the front or outer end of theshelf.

The side bars act are provided with perforations which may be brought toregister with any one of the perforations of the corresponding uprightsB or 13*, so that the bolts 0 can pass through said registeringperforations and can thereby uphold adjacent ends of two shelves. Thisis shown in Fig. 6, in which A A are two adjacent shelves on the samelevel, and the bolt 0 on the right hand passes through registeringperforations in the upright 13 and in the side bar a of the shelf A,thereby upholding both shelves A and A. The bolt O can, by means of itsspring-latch F and its grooves c, 0 and 0 be held to support bothshelves or one shelf only, or it can be held to support neither.

1. The c0n1biuation,with the rear uprights having the pins 7), and thefront uprights having the perforations b, of the shelf having the sidebars a a, notched at their rear ends to engage the pins Z), andperforated near their front ends to register with the perforations l),the rollers having suitable bearin gs in the side rails and frame, andthe bolts 0, having hearings in the brackets D, and arranged to engagein registering perforations in the side bars and corresponding uprights,substantially as specified.

EDMOND II. BABBITT. lVitnesses:

O. D. MooDY, O. C. LOGAN.

